SAMSUNG SGH-I700
Instrukcja Serwisowa

2. SGH-i700 Flow Chart of Troubleshooting
1.Power On
'POWER ON' does not work

Yes
Check the current consumption more than 20mA

No

Press nPower Key or Hardware Reset

Yes No
Check U317 of U316 or the pinis1 High Charge the Battery

Yes

Check the pin 1 of U323 is High

No

Charge the Battery

Yes
Check the VBat more than 3.6V

No

Yes

Check the pin 4 of U308 is more than 3.3V

b o
No No

No

Check the pin 5 of U311 is more than 1.0V

M
Yes Yes Yes
END

i

lc

Charge the Battery

i

ps

h

Check to the path from pin 1 of CN301 to pin 1, 2 of U307

Check the pin 1 of U311 is High

Check the clock signal at OSC101 and OSC102

Retry Hardware Reset

Check the initial operation

2-1

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